[PATCH] buildchroot: mount base-apt when using repo caching

[Cedric Hombourger <Cedric_Hombourger@mentor.com>]

Debian package builds start with the installation of dependencies. In our case,
they get installed into the buildchroot from either upstream package feeds or
from the local package cache (aka base-apt) when ISAR_USE_CACHED_REPO is set.
For the latter to work, /base-apt obviously needs to be bind mounted in the
buildchroot. This was simply missing.

Signed-off-by: Cedric Hombourger <Cedric_Hombourger@mentor.com>
---
 meta/classes/buildchroot.bbclass | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/meta/classes/buildchroot.bbclass b/meta/classes/buildchroot.bbclass
index ea1538a..b7a8ea5 100644
--- a/meta/classes/buildchroot.bbclass
+++ b/meta/classes/buildchroot.bbclass
@@ -38,6 +38,14 @@ buildchroot_do_mounts() {
             mount --rbind /sys '${BUILDCHROOT_DIR}/sys'
         mount --make-rslave '${BUILDCHROOT_DIR}/sys'
 
+        # Mount base-apt if 'ISAR_USE_CACHED_BASE_REPO' is set
+        if [ "${@repr(bb.utils.to_boolean(d.getVar('ISAR_USE_CACHED_BASE_REPO')))}" = 'True' ]
+        then
+            mkdir -p '${BUILDCHROOT_DIR}/base-apt'
+            mountpoint -q '${BUILDCHROOT_DIR}/base-apt' || \
+                mount --bind '${REPO_BASE_DIR}' '${BUILDCHROOT_DIR}/base-apt'
+        fi
+
         # Refresh /etc/resolv.conf at this chance
         cp -L /etc/resolv.conf '${BUILDCHROOT_DIR}/etc'
         ) 9>'${MOUNT_LOCKFILE}'
-- 
2.11.0